Add a free flow exhaust and a cold air intake free flow air filter. This will give you slightly more h.p. To get some real horsepower you can install a turbo charger or supercharger but they are expensive.
There is no easy way to increase horsepower but probably the easiest way is to add a nitros system. Be aware that you can destroy the engine with nitros used incorrectly.
there is no way to determine the answer to this question. on a given engine, there is going to be a calculated horsepower rating that the engine can make before it fails. every engine is going to be different. type of fuel, number of cylinders, layout of those cylinders, bore (diameter) of the cylinder, and stroke (length of 'up and down' movement of the cylinder) are just a few of the things that factor the horsepower rating. couple this with the fact that a car can have more then one engine... and in the case of hybrids, you have an electric motor attached to the engine which adds to the overall horsepower rating. so the answer to your question is.... there is no highest number.
The easiest way to get to the top starter bolt is with 12" extension and a 13 mil socket. You have to feel your way between the solenoid and the block. You can only take the starter off from the top if the engine is on a engine stand
hook a horse to it or buy a 350
Depends on the engine that is turning 1,000 rpm's. A larger engine develops way more horsepower than a small engine at 1,000 rpm's.
You can't convert cubic inches to horsepower. more cubic inches usually mean more horsepower but it horsepower is determined by more than displacement (i.e turbo chargers and engine internals). You can find horsepower per cubic inch by dividing horsepower by cubic inch, but there is no way to use just cubic inches to determine horsepower
get an electric radiator fan anf take the blades of the belt driven one 10-20 more horsepower
easiest way is to send it to a mechanic shop
The easiest way to get horsepower is size... All things being equal - the bigger the more power.
A timing light on #1 cylinder and align the timing marks on crankshaft and stationary mark on engine block
There is no way of answering this question accurately, as there is no direct correlation betwen cubic centimeters and horsepower. In addition, horsepower is also a function of engine rpm. For example, one engine of 139cc at 2000 RPM might develop X horsepower, but another engine with 139cc at 2000 rpm might develop X+2 horsepower.
multiply the number of cylinders you have by 2. normally only 4 cylinder and some 6 cylinder engines have 4 valves per cylinder. if in doubt remove the valve cover and count the number of rockers or cam lobes if it is an overhead cam engine. easiest way to find out for sure is to look your specific engine up on the web.